exoperidium

[ ek-soh-puh-rid-ee-uh m ]

/ ˌɛk soʊ pəˈrɪd i əm /

the outer of the two layers into which the peridium is divided.

Origin of exoperidium

exo- + peridium

Exoperidium revolute, cut to about the middle in eight to ten segments.

The Mushroom, Edible and Otherwise |M. E. Hard
Exoperidium cut in six to ten segments about half way, the limb deeply saccate.

The Mushroom, Edible and Otherwise |M. E. Hard
Fleshy layer closely attached, very light in color, usually smooth on the limb of the exoperidium but cracked on the segments.

The Mushroom, Edible and Otherwise |M. E. Hard
The outer coat or exoperidium recurved, segments acute at the apex, eight to twelve segments divided to about the middle.

The Mushroom, Edible and Otherwise |M. E. Hard

Exoperidium cut beyond the middle into seven to nine acute segments.

The Mushroom, Edible and Otherwise |M. E. Hard